Rimac (rēˈmäk) [key], river, c.80 mi (130 km) long, rising in the Andes of W Peru, and flowing W through Lima to the Pacific Ocean near Callao. It is used extensively for irrigation. The scenic Rimac valley affords one of the chief lines of communication to the high, interior mountain basins.
More on Rimac from Infoplease:
See more Encyclopedia articles on: Latin American and Caribbean Physical Geography